This Part Fits the following kits / parts:

#73961 - CHASSIS PRINCIPAL 2.5mm (SAVAGE X/GRIS/GAUCHE)

Savage X

The low centre of gravity 'X' Chassis drops the
engine, centre gearbox and radio 5mm lower than the Savage 25,
resulting in better handling and faster lap times. Made from strong
2.5mm Aluminium the TVP chassis plates are the virtually
indestructible foundations of the chassis. The TVP design makes the
Savage unique and gives it a realistic monster truck feel.